Research Article
Research and Application of Multi-parameter Automatic Monitoring Technology for Deep Foundation Pits
Jiayan Liu*
Issue:
Volume 11, Issue 5, October 2026
Pages:
251-263
Received:
15 July 2026
Accepted:
26 August 2026
Published:
4 September 2026
Abstract: With the rapid growth of deep foundation‑pit engineering, construction‑related risks have become increasingly prominent. Traditional automatic monitoring approaches are difficult to satisfy the demands of wireless transmission and real‑time risk warning, which restricts the risk‑management performance of foundation‑pit projects. To address this limitation, this paper proposes an Internet‑of‑Things (IoT)‑enabled wireless monitoring technique for deep foundation pits, aiming to achieve continuous wireless data perception and intelligent risk early‑warning for excavation engineering. Taking an actual deep foundation‑pit project in Shanghai as the research object, multi‑parameter automatic monitoring, including inclinometer deformation, groundwater level and static leveling settlement, is implemented by the developed IoT monitoring system. Field comparisons against manual observation data verify that the proposed technique can satisfy engineering data‑accuracy specifications. Moreover, it effectively reduces early‑warning response latency and cuts the expenditure on cable‑laying work. This work validates the practicability of low‑power IoT solutions and indicates promising application potential of such technologies in geotechnical monitoring domains.
Abstract: With the rapid growth of deep foundation‑pit engineering, construction‑related risks have become increasingly prominent. Traditional automatic monitoring approaches are difficult to satisfy the demands of wireless transmission and real‑time risk warning, which restricts the risk‑management performance of foundation‑pit projects. To address this lim...
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Research Article
Key Technologies for Cutterhead Repair of Large-Diameter Slurry Balance Shield Under Atmospheric Pressure Access
Gu Tianxin,
Wang Kai,
Chen Qiao,
Wan Xueyu*,
Bao Peng
Issue:
Volume 11, Issue 5, October 2026
Pages:
264-273
Received:
3 August 2026
Accepted:
31 August 2026
Published:
22 September 2026
Abstract: Aiming at the common engineering challenges of severe wear, eccentric wear, and seal failure of cutterheads during the excavation of large-diameter shields in hard rock strata, this study investigates the in-situ cutterhead repair technology under atmospheric pressure access conditions, based on the cutterhead damage repair project of the φ15.01 m slurry balance shield on the left line of the Zhijiang Road Water Conveyance Pipe Gallery and Road Improvement Project in Hangzhou. Through stratum stability assessment, verification of atmospheric pressure access conditions, excavation and support of working chambers, staged repair of cutter boxes, panel welding reinforcement, non-destructive testing of welds, pressure-holding tests, and trial tunneling parameter control, a complete set of repair technologies applicable to large-diameter shield cutterhead repair under atmospheric pressure in moderately weathered hard rock strata has been developed. Engineering practice demonstrates that this approach enables rapid cutterhead repair without the need for additional excavation or equipment disassembly, with repair accuracy meeting design requirements. Throughout the construction process, ground surface settlement and deformation of buildings and structures remain within controllable limits, effectively ensuring the safety of adjacent cultural relic buildings and existing pipelines. The research results provide technical references for the treatment of cutterhead damage in large-diameter shields constructed in hard rock strata within urban core areas.
Abstract: Aiming at the common engineering challenges of severe wear, eccentric wear, and seal failure of cutterheads during the excavation of large-diameter shields in hard rock strata, this study investigates the in-situ cutterhead repair technology under atmospheric pressure access conditions, based on the cutterhead damage repair project of the φ15.01 m ...
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